<?php
/*
Widget Data - Setting Import/Export Plugin
Adds functionality to export and import widget data
Authors: Kevin Langley and Sean McCafferty
Version: 0.4
*******************************************************************
Copyright 2011-2011 Kevin Langley & Sean McCafferty  (email : klangley@voceconnect.com & smccafferty@voceconnect.com)

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
*******************************************************************
*/

class Widget_Data {

	var $import_filename;
	
	function __construct() {
		add_action('admin_menu', array($this, 'add_admin_menus'));
		add_action('admin_enqueue_scripts', array($this, 'add_admin_scripts'));
		add_action('load-tools_page_widget-settings-export', array($this, 'export_widget_settings'));
		add_action('wp_ajax_widget_import_submit', array($this, 'widget_import_submit'));
		add_filter('upload_mimes', array($this, 'json_upload_mimes'));
	}
	
	function add_admin_scripts ($hook) {
		if('tools_page_widget-settings-import' != $hook || 'tools_page_widget-settings-export' != $hook) {
			wp_register_style('widget_data_css', get_template_directory_uri().'/lib/admin/inc/widget-settings-importexport/widget_data.css' , __FILE__);
			wp_enqueue_style('widget_data_css');

			wp_register_script( 'widget_data', get_template_directory_uri().'/lib/admin/inc/widget-settings-importexport/widget_data.js', __FILE__);
			wp_enqueue_script('widget_data');
			$widgets_url = get_admin_url(false, 'widgets.php');
			wp_localize_script('widget_data', 'widgets_url', $widgets_url);
		}
	}

	 function add_admin_menus() {
		//import
		$this->submenu_import = add_submenu_page('tools.php', __('Import Widgets', 'gp_lang'), __('Import Widgets', 'gp_lang'), 'administrator', 'widget-settings-import',  array(&$this, 'import_settings_page'));
		// export
		$this->submenu_export = add_submenu_page('tools.php', __('Export Widgets', 'gp_lang'), __('Export Widgets', 'gp_lang'), 'administrator', 'widget-settings-export',  array(&$this, 'export_settings_page'));
	}

	function export_settings_page() {
		$sidebar_widgets = $this->order_sidebar_widgets(wp_get_sidebars_widgets());
		?>
		<div class="widget-data export-widget-settings">
			<div class="wrap">
				
				<div id="icon-tools" class="icon32"><br/></div>
				<h2><?php _e('Export Widgets', 'gp_lang'); ?></h2>
				
				<div id="message" class="widget-selection-error error"><p><?php _e('Please select a widget to continue.', 'gp_lang'); ?></p></div>
								
				<div id="message" class="updated"></div>
				<form action="" method="post" id="widget-export-settings">
					<div class="left">
							<button class="button-bottom button button-highlighted" type="button" name="SelectAllActive" id="SelectAllActive"><?php _e('Select All Active Widgets', 'gp_lang'); ?></button>
							<button class="button-bottom button button-highlighted" type="button" name="UnSelectAllActive" id="UnSelectAllActive"><?php _e('Un-Select All Active Widgets', 'gp_lang'); ?></button>
					</div>
					<div style="clear:both;"></div>

					<div class="sidebars">
						<?php
						foreach ($sidebar_widgets as $sidebar_name=>$widget_list) :
							if (count($widget_list) == 0)
								continue;

							$sidebar_info = $this->get_sidebar_info($sidebar_name);?>

							<div class="sidebar">
								<h4><?php echo $sidebar_info['name']; ?></h4>

								<div class="widgets">
									<?php foreach ($widget_list as $widget) :

										$widget_type = trim(substr($widget, 0, strrpos($widget, '-')));
										$widget_type_index = trim(substr($widget, strrpos($widget, '-') + 1));
										$option_name = 'widget_'.$widget_type;
										$widget_options = get_option($option_name);
										$widget_title = isset($widget_options[$widget_type_index]['title']) ? $widget_options[$widget_type_index]['title'] : '';

										?>
										<div class="import-form-row">
											<input class="<?php echo ($sidebar_name == 'wp_inactive_widgets') ? 'inactive' : 'active'; ?>" type="checkbox" name="<?php echo $widget; ?>" id="meta_<?php echo $widget; ?>" />
											<label for="meta_<?php echo $widget; ?>">&nbsp;
												<?php
												echo ucfirst($widget_type);

												if (!empty($widget_title)) :
													echo (' - '.$widget_title);
												else :
													echo (' - '.$widget_type_index);
												endif;
												?>
											</label>
										</div>
									<?php endforeach; ?>
								</div> <!-- end widgets -->
							</div> <!-- end sidebar -->
						<?php endforeach;?>
					</div> <!-- end sidebars -->
					<div class="right">
						<button class="button-bottom button-primary" type="submit" name="export-widgets" id="export-widgets"><?php _e('Export Widgets', 'gp_lang'); ?></button>
					</div>
				</form>
			</div> <!-- end wrap -->
		</div> <!-- end export-widget-settings -->
		<?php
	}
	
	function import_settings_page() {
		?>
		<div class="widget-data import-widget-settings">
			<div class="wrap">
				<div id="icon-tools" class="icon32"><br/></div>
				<h2><?php _e('Import Widgets', 'gp_lang'); ?></h2>
				
					<div id="message" class="widget-selection-error error"><p><?php _e('Please select a widget to continue.', 'gp_lang'); ?></p></div>

					<?php if (isset($_FILES['upload-file'])) : ?>
					<div id="message" class="updated"></div>
					<div class="import-wrapper">
					<div class="left">
							<button class="button-bottom button button-highlighted" type="button" name="SelectAllActive" id="SelectAllActive"><?php _e('Select All Active Widgets', 'gp_lang'); ?></button>
							<button class="button-bottom button button-highlighted" type="button" name="UnSelectAllActive" id="UnSelectAllActive"><?php _e('Un-Select All Active Widgets', 'gp_lang'); ?></button>
					</div>
					<div style="clear:both;"></div>
					<form action="" id="import-widget-data" method="post">
						<?php
						$json = $this->get_widget_settings_json();
						$json_data = json_decode($json[0], true);
						$json_file = $json[1];

						if (!$json_data)
							return;
						?>

						<div class="sidebars">
							<?php
							if (isset ($json_data[0])) :
								foreach ($this->order_sidebar_widgets($json_data[0]) as $sidebar_name=>$widget_list) :
									if (count($widget_list) == 0)
										continue;

									$sidebar_info = $this->get_sidebar_info($sidebar_name);?>

									<?php if ($sidebar_info) : ?>
										<div class="sidebar">
											<h4><?php echo $sidebar_info['name']; ?></h4>

											<div class="widgets">
												<?php foreach ($widget_list as $widget) :
													$widget_options = false;

													$widget_type = trim(substr($widget, 0, strrpos($widget, '-')));
													$widget_type_index = trim(substr($widget, strrpos($widget, '-') + 1));
													$option_name = 'widget_'.$widget_type;
													$widget_type_options = $this->get_option_from_array($widget_type, $json_data[1]);
													if ($widget_type_options) :
														$widget_title = isset($widget_type_options[$widget_type_index]['title']) ? $widget_type_options[$widget_type_index]['title'] : '';
														$widget_options = $widget_type_options[$widget_type_index];
													endif;
													?>
												<div class="import-form-row">
														<input class="<?php echo ($sidebar_name == 'wp_inactive_widgets') ? 'inactive' : 'active'; ?>" type="checkbox" name="widgets[<?php echo $widget_type; ?>][<?php echo $widget_type_index; ?>]" id="meta_<?php echo $widget; ?>" />
														<label for="meta_<?php echo $widget; ?>">&nbsp;
															<?php
															echo ucfirst($widget_type);

															if (!empty($widget_title)) :
																echo (' - '.$widget_title);
															else :
																echo (' - '.$widget_type_index);
															endif;
															?>
														</label>
												</div>
												<?php endforeach; ?>
											</div> <!-- end widgets -->
										</div> <!-- end sidebar -->
									<?php endif; ?>
								<?php endforeach; ?>
							<?php endif; ?>
							<input type="hidden" name="import_file" value="<?php echo $json_file; ?>"/>
							<input type="hidden" name="action" value="widget_import_submit"/>
						</div> <!-- end sidebars -->
						<div class="right">
							<button class="button-bottom button-primary" type="submit" name="import-widgets" id="import-widgets"><?php _e('Import Widgets', 'gp_lang'); ?></button>
						</div>
						</form>
					</div>
					<?php else : ?>
						<form action="" id="upload-widget-data" method="post" enctype="multipart/form-data">
						<p><?php _e('Select the file that contains widget settings', 'gp_lang'); ?></p>
						<div id="output-text" style="float:left;"><?php _e('No file chosen', 'gp_lang'); ?></div>
						<div id="upload-button" class="button-secondary" style="float:left;"><?php _e('Choose file', 'gp_lang'); ?></div>
						<input type="file" name="upload-file" id="upload-file" size="40" />
						<div style="clear:both;"></div>
						<div class="block">
							<button type="submit" name="button-upload" id="button-upload" class="button"><?php _e('Upload file and import', 'gp_lang'); ?></button>
						</div>
						</form>
					<?php endif; ?>
			</div> <!-- end wrap -->
		</div> <!-- end import-widget-settings -->
		<?php
	}
	
function parse_export_data($posted_array){
		$sidebars_array = get_option('sidebars_widgets');
		$sidebar_export = array();
		foreach($sidebars_array as $sidebar=>$widgets){
			if(!empty($widgets) && is_array($widgets)) {
				foreach($widgets as $sidebar_widget){
					if(in_array($sidebar_widget, array_keys($posted_array))) {
						$sidebar_export[$sidebar][] = $sidebar_widget;
					}
				}			
			}
		}
		$widgets = array();
		foreach($posted_array as $k=>$v) {
			$widget = array();
			$widget['type'] = trim(substr($k, 0, strrpos($k, '-')));
			$widget['type-index'] = trim(substr($k, strrpos($k, '-') + 1));
			$widget['export_flag'] = ($v == 'on') ? true : false;
			$widgets[] = $widget;
		}
		$widgets_array = array();
		foreach($widgets as $widget) {
			$widget_val = get_option('widget_'.$widget['type']);
			$multiwidget_val = $widget_val['_multiwidget'];
			$widgets_array[$widget['type']][$widget['type-index']] = $widget_val[$widget['type-index']];
			if(isset($widgets_array[$widget['type']]['_multiwidget'])) {
				unset($widgets_array[$widget['type']]['_multiwidget']);
			}
			$widgets_array[$widget['type']]['_multiwidget'] = $multiwidget_val;
		}
		unset($widgets_array['export']);
		$export_array = array($sidebar_export, $widgets_array);
		$json = json_encode($export_array);
		return $json;
	}
	
	function parse_import_data($import_array){
		$sidebars_data = $import_array[0];
		$widget_data = $import_array[1];
		$current_sidebars = get_option('sidebars_widgets');
		$new_widgets = array();

		foreach($sidebars_data as $import_sidebar=>$import_widgets) :

			foreach ($import_widgets as $import_widget) :
				//if the sidebar exists
				if (isset($current_sidebars[$import_sidebar])) :
					$title = trim(substr($import_widget, 0, strrpos($import_widget, '-')));
					$index = trim(substr($import_widget, strrpos($import_widget, '-') + 1));
					$current_widget_data = get_option('widget_'.$title);
					$new_widget_name = $this->get_new_widget_name($title, $index);
					$new_index = trim(substr($new_widget_name, strrpos($new_widget_name, '-') + 1));

					if(is_array($new_widgets[$title])) {
						while(array_key_exists($new_index, $new_widgets[$title])) {
							$new_index++;
						}
					}
					$current_sidebars[$import_sidebar][] = $title.'-'.$new_index;
					if(array_key_exists($title, $new_widgets)){
						$new_widgets[$title][$new_index] = $widget_data[$title][$index];
						$multiwidget = $new_widgets[$title]['_multiwidget'];
						unset($new_widgets[$title]['_multiwidget']);
						$new_widgets[$title]['_multiwidget'] = $multiwidget;
					} else {
						$current_widget_data[$new_index] = $widget_data[$title][$index];
						$current_multiwidget = $current_widget_data['_multiwidget'];
						$new_multiwidget = $widget_data[$title]['_multiwidget'];
						$multiwidget = ($current_multiwidget != $new_multiwidget) ? $current_multiwidget : 1;
						unset($current_widget_data['_multiwidget']);
						$current_widget_data['_multiwidget'] = $multiwidget;
						$new_widgets[$title] = $current_widget_data;
					}

					//Going to use for future functionality
				//if the sidebar does not exist, put the widget in the in-active
//				else :
//
//					if(isset($sidebars_data['wp_inactive_widgets'])){ //if wp_inactive_widgets is set on the import
//						foreach($sidebars_data[$import_sidebar] as $widget){ // just append all that sidebars widgets to the array
//							$sidebars_data['wp_inactive_widets'][] = $widget;
//					}
//					} else { // if the wp_inactive_widets is not defined
//						$sidebars_data['wp_inactive_widgets'] = $sidebars_data[$import_sidebar]; // just set the old array as the wp_inactive_widgets array
//					}
//					unset($sidebars_data[$import_sidebar]);  // remove old sidebar array in the import data

				endif;
			endforeach;
		endforeach;

		if(isset($new_widgets) && isset($current_sidebars)){
			update_option('sidebars_widgets', $current_sidebars);
			foreach($new_widgets as $title=>$content){
				update_option('widget_'.$title, $content);
			}

			return true;
		} else { return false; }
	}
	
	function export_widget_settings() {
		if($_POST) {
			header("Content-Description: File Transfer");
			header("Content-Disposition: attachment; filename=widget_data.json");
			header("Content-Type: application/octet-stream");
			echo $json = $this->parse_export_data($_POST);
			exit();
		}
	}
	
	function widget_import_submit() {
		$widgets = $_POST['widgets'];
		$json_data = file_get_contents($_POST['import_file']);
		$json_data = json_decode($json_data, true);
		$sidebar_data = $json_data[0];
		$widget_data = $json_data[1];
		$remove_array = array();
		$sidebar_array = array();
		foreach($sidebar_data as $title=>&$sidebar){
			$count = count($sidebar);
			for($i=0;$i<$count;$i++){
				$widget = array();
				$widget['type'] = trim(substr($sidebar[$i], 0, strrpos($sidebar[$i], '-')));
				$widget['type-index'] = trim(substr($sidebar[$i], strrpos($sidebar[$i], '-') + 1));
				if(!isset($widgets[$widget['type']][$widget['type-index']])){
					unset($sidebar_data[$title][$i]);
				}
			}
			$sidebar_data[$title] = array_values($sidebar_data[$title]);
		}
		
		foreach($widgets as $widget_title=>$widget_value){
			foreach($widget_value as $k=>$v){
				$widgets[$widget_title][$k] = $widget_data[$widget_title][$k];
			}
		}
		
		$sidebar_data = array_filter($sidebar_data);
		$new_array = array($sidebar_data, $widgets);
		if($this->parse_import_data($new_array)){
			echo "SUCCESS";
		} else {
			echo "ERROR";
		}
		
		die(); // this is required to return a proper result
	}
	
	function get_widget_settings_json() {
		$widget_settings = $this->upload_widget_settings_file();
		$file_contents = file_get_contents($widget_settings['file']);
		return array($file_contents, $widget_settings['file']);
	}

	function upload_widget_settings_file() {
		if (isset($_FILES['upload-file'])) {
			$overrides = array('test_form' => false);
			$upload = wp_handle_upload($_FILES['upload-file'],$overrides);

			return $upload;
		}

		return false;
	}

	function get_new_widget_name($widget_name, $widget_index){
		$current_sidebars = get_option('sidebars_widgets');
		$all_widget_array = array();
		foreach($current_sidebars as $sidebar=>$widgets){
			if(!empty($widgets) && is_array($widgets) && $sidebar != 'wp_inactive_widgets') {
				foreach($widgets as $w){
					$all_widget_array[] = $w;
				}
			}
		}
		while(in_array($widget_name.'-'.$widget_index, $all_widget_array)){
			$widget_index++;
		}
		$new_widget_name = $widget_name.'-'.$widget_index;
		return $new_widget_name;
	}

	function get_option_from_array($option_name, $array_options) {
		foreach ($array_options as $name=>$option) :
			if ($name == $option_name)
				return $option;
		endforeach;

		return false;
	}

	function get_sidebar_info($sidebar_id) {
		global $wp_registered_sidebars;

		//since wp_inactive_widget is only used in widgets.php
		if ($sidebar_id == 'wp_inactive_widgets') :
			return array('name'=>'Inactive Widgets', 'id'=>'wp_inactive_widgets');
		endif;

		foreach ($wp_registered_sidebars as $sidebar) :
			if (isset ($sidebar['id']) && $sidebar['id'] == $sidebar_id) :
				return $sidebar;
			endif;
		endforeach;

		return false;
	}
	
	function get_widget_info($widget){
		global $wp_registered_widgets;
		if(isset($wp_registered_widgets[$widget])){
			return true;
		} else {
			return false;
		}
	}

	function order_sidebar_widgets($sidebar_widgets) {
		$inactive_widgets = false;

		//seperate inactive widget sidebar from other sidebars so it can be moved to the end of the array, if it exists
		if (isset($sidebar_widgets['wp_inactive_widgets'])) :
			$inactive_widgets = $sidebar_widgets['wp_inactive_widgets'];
			unset($sidebar_widgets['wp_inactive_widgets']);
			$sidebar_widgets['wp_inactive_widgets'] = $inactive_widgets;
		endif;

		return $sidebar_widgets;
	}
	
	function json_upload_mimes ( $existing_mimes=array() ) {
		$existing_mimes['json'] = 'application/json';
		return $existing_mimes;
	}

}

add_action('init', create_function('', 'new Widget_Data();'));